Laparoscopic vs Open Surgery for Colorectal Liver Metastases

Area of Science:

• Hepatobiliary Surgery
• Surgical Oncology
• Minimally Invasive Surgery

Background:

• Colorectal liver metastases are commonly treated with surgery.
• Laparoscopic approaches are increasingly used, but evidence for complex cases is needed.

Purpose of the Study:

• To compare outcomes of laparoscopic versus open surgery for colorectal liver metastases.
• To evaluate modern minimally invasive liver surgery (MILS) in complex disease states.
• To minimize selection bias by matching patient cohorts.

Main Methods:

• A cohort study of 885 liver resections for colorectal metastases (2004-2017).
• Propensity score matching (1:4 ratio) compared MILS (high adoption rate) with open surgery (low adoption rate).
• Primary endpoint: short-term outcomes (morbidity, mortality, recovery). Secondary endpoint: long-term outcomes.

Main Results:

• MILS group had significantly lower postoperative morbidity (20.2% vs 22.8%) and major complications (6.7% vs 8.5%).
• Patients undergoing MILS experienced shorter hospital stays (3 vs 5 days).
• Oncologic outcomes were comparable between laparoscopic and open surgery.

Conclusions:

• Modern MILS offers significant advantages over open surgery for colorectal liver metastases.
• Laparoscopic surgery is feasible, effective, and oncologically sound for a majority of patients (up to 70%) in high-volume centers.
• Increased feasibility and effectiveness support wider adoption of MILS.